دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: total pressure measured from an absolute vacuum. It equals the sum of the gauge pressure and the atmospheric pressure. Expressed in pounds per square inch.

the reading of gauge pressure plus the atmospheric pressure.

(atm) n: a unit of pressure equal to the atmospheric pressure at sea level, 14.7 pounds per square inch (101.325 kilopascals)

n pi: total pressure at a depth underwater, expressed as multiples of normal atmospheric pressure.

n: the pressure exerted by the weight of the atmosphere. At sea level, the pressure is approximately 14.7 pounds per square inch (101.325 kilopascals),often referred to as 1 atmosphere. Also called barometric pressure.

n: the aging of specimens for test purposes at normal atmospheric pressure for a designated period of time under specified conditions of temperature and humidity.

n: an aneroid barometer that continuously records atmospheric pressure values on a graph or chart.

n: an instrument for measuring atmospheric pressure. See aneroid barometer, mercury barometer.

n: see atmospheric pressure.

n: the temperature at which the vapour pressure of a liquid becomes equal to the pressure exerted on the liquid by the surrounding atmosphere. The boiling point of water is 212ﾰF or 100ﾰC at atmospheric pressure (14.7 pounds per square inch gauge or 101.325 kilopascals).

the temperature at which the vapor pressure of the liquid is equal to the pressure exerted on it by the surrounding atmosphere.

n: a chamber in which excessive pressure can gradually be reduced to atmospheric pressure. It is especially equipped to help divers complete their decompression schedules and may also be used to treat diving casualties. One or more of the compartments may be installed on the deck of a work boat or barge.